Footwear midsole



FIG. 1 is a front perspective view of a footwear midsole showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is a bottom view thereof.

The broken lines in FIGS. 1-4 represent portions of the footwear that form no part of the claimed design. The broken lines which define the bounds of the claimed design form no part thereof. 

CLAIM The ornamental design for a footwear midsole, as shown and described. 